Tabs will not saved after reboot

For years i used firefox till last week i saw one article with vavaldi into it.
After reading it i get enthusiastic and start to using vavaldi.

Now my problem, i have always open a lot of tabs in my browser, but after a reboot all my tabs are gone :S.
I try to install a addon for it ( tabs & restore ) but this one shutdown vavaldi when i want to reopen my tabs.

By firefox my tabs always saved when i reboot, how i can do the same with vivaldi?

@oxzhor
Mmh I think there was a similar case like you experience - but can't remember if there was a solution to this.
1.) What version of vivaldi do you use (you can look it up on vivaldi://about)
2.) Do you use any kind of security software (adblocker, antivirus progs, etc?)

In the meantime you can use the function to save sessions as a workaround.
It will save all tabs that are open.

@oxzhor: The Tabs Backup and Restore Extension may be interfering. I recommend you try removing it entirely, re-starting, see if your tab behavior is normal and, if it is, install it again and see what happens. (Disabling/enabling may not have the same effect.)

I was able to fix this by disabling the extension Todoist, which I actually hadn't started using. This HAD been working prior to the update, however. I disabled all extensions, then enabled them one by one, opened some random pages, rebooted, and opened Vivaldi again. This appeared to be the culprit. Hope this helps!